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Effects of design and operational parameters on ammonium removal by single-stage French vertical flow filters treating raw domestic wastewater
- Source :
- Ecological Engineering, Ecological Engineering, Elsevier, 2016, 97, pp.516-523. ⟨10.1016/j.ecoleng.2016.10.002⟩, ECOLOGICAL ENGINEERING
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- International audience; Four pilot-scale single-stage vertical flow filters (of 2.25 m2 each), treating raw domestic sewage, were studied over 20 months in order to assess the impact of different designs and operational conditions on treatment efficiency. One of them was designed and operated as a standard 1st stage “French” vertical flow constructed wetland unit. The other 3 pilots differed from the standard pilot with respect to the filtration depth, the loading rate or the partial replacement of gravel by zeolite (chabazite), respectively. The pilots were monitored by analysing 24-h flow-weighted composite samples for TSS, CODtot, CODd, ammonium, nitrate and carbonate. All pilots showed a high ability to remove TSS and CODtot, with average removal of 81% and 75%, respectively. Increasing the depth of the filtration layer from 40 to 100 cm allowed to significantly improve ammonium removal (81%), whereas the simultaneous increase in hydraulic and organic loads resulted in a deterioration of ammonium and CODd removals (44% for both parameters). Using zeolite did not induce any observable improvements in ammonium removal under the conditions of the study.
- Subjects :
- Chabazite
Technology and Engineering
Design
Environmental Engineering
0208 environmental biotechnology
Sewage
CONSTRUCTED WETLANDS
TREATMENT PERFORMANCES
02 engineering and technology
010501 environmental sciences
Management, Monitoring, Policy and Law
SORPTION
01 natural sciences
Vertical flow constructed wetland
Domestic wastewater
law.invention
chemistry.chemical_compound
Nitrate
law
TOTAL NITROGEN REMOVAL
Ammonium
Zeolite
Filtration
0105 earth and related environmental sciences
Nature and Landscape Conservation
business.industry
Environmental engineering
[SDE.ES]Environmental Sciences/Environmental and Society
6. Clean water
020801 environmental engineering
RECIRCULATION
chemistry
Wastewater
Earth and Environmental Sciences
Constructed wetland
Environmental science
business
Subjects
Details
- ISSN :
- 09258574 and 18726992
- Volume :
- 97
- Database :
- OpenAIRE
- Journal :
- Ecological Engineering
- Accession number :
- edsair.doi.dedup.....7ead2bd8cf83d48d9777532b8524e836